Tilting piece-magazine for automatic turret-machines.



J. M. SYROTH. TILTING PIECE MAGAZINE FOR AUTOMATIC TURRET MACHINES.

APPLICATION FILED DEG.19, 1910.

Patented Jan. 7, 1913.

4 JWBItZ'QT; Wawuz/ COLUMBIA ILANOORAPH CONWASIHNGTON, n. c.

JOHANN MARTIN SYlEtO'llI-I,v LINDENTHAL, NEAR LEIPZIG, GERMANT.

TILTING rinonMAGAzmE r03 AUTOMATIC TURRET-MAGHIMNV'ES.

To all whom it may concern Be it known that I, J OHANN MARTIN SY- ROTH, a citizen of the Empire of Germany,

and a resident of Lindenthal, near Leipzig, Germany, have invented certain new and useful Improvements in Tilting Piece-Magazines for Automatic Turret-Machines, of

which the following is a specification.

This invention has reference to improvements in tilting piece magazines for automatic turret machine's.

It is old to provide automatic turret lathes with tilting magazines for carrying the pieces of stock. Such a magazine is called a tilting one because it is ordinarily outside of the path of the tools carried on the turret and is swung into the path which the tools traverse only at the time a piece of stock is to be removed from it. The pieces are then withdrawn from the magazine one by one by means of a gripping device, the so called conveyeron the turret and carried toward the head stock. In order to insurecontinuous op-ration of the turret lathe it is thus only necessary to fill up the tilting magazine at certain intervals with a new supply of pieces.

For feeding the pieces one at a time from the magazineto the place where they are operatedupon two pawls are ordinarily emplo ed at the lower end of the magazine which enter into and are withdrawn from the same alternately in this manner releasing the pieces one after another toward the working position. It is important that these pawls operate reliably during the tilting motion of the magazine and this is to be insured according to this invention by using for the motion of the piece magazine a cam and for the motion of the two pawls a second cam.

The invention is illustrated in the accompanying drawing in which: Figure 1 is a front view of the upper part of an automatic turret lathe of the above mentioned kind. Fig. 2 is a side view partially in section on a larger scale. Figs. 3

, and 4: are rear views of the arrangement of parts on the tilting magazine; Fig; 3 showing the mechanism for moving the magazine and Fig. 4: that for operating the feed pawls. Fig. 5 is a section on line,C-G of Fig. 2.

The drawings illustrate an automatic turret lathe in which a turret A is movable axially toward the head stock B., Extending from the bearings F of the distributing ar- 7 Specification of Letters Patent. Application filed December 19, 1910. Serial No. 598,249.

Patented Jan. 7,1913.

bor Z are fastened the brackets t 25 one behind the turret side and the other behind the head stock carrying a shaft u upon which thetilting magazine 6 is rotatably mounted. Besides this the brackets carry a shaft 6 that gives the tilting motion tothe magazine I) and another shaft '0 for operating the two paWls 0 and k for feeding forward the pieces a stored in the magazine.

When the magazine 6 makes a tilting motion toward the position shown indotted lines the pawl c withdraws ofits own accord and the pieces a would all roll or slide toward the lowest portion of the magazine if the second pawl I1: would not prevent this by entering the magazine under the action of the spring at the moment when the pawl 0 is withdrawn from the magazine. Vice versa on the return motion of the magazine I) that is fromthe position shown in dotted lines to the working position shown in full lines, the pawl owill reenter the magazine and retain all the pieces a that lie beyond the foremost piece which latter now rests against the pawl 70. As the latter is simultaneously withdrawn this firstpiece a may roll unobstrnctedly into the enlarged portion d of the magazine to the point where it is to be removed. The piece a is now lo} cated opposite the socket D of the turret A in which is inserted a tool, the so-called slotted tongue or conveyer, see Fig. 1. This tool gripsthe advanced piece a aslsoon as the turret slide is brought forward. After the completion of the forward motion the turret slide is retracted and the magazine I; tilted again in readiness with a new piece taken from the magazine opposite the chuck of the head stock B. Y The turret advances and the conveyer places the new piece into the chuck of the head stock B. This is closed automatically and firmly holds the piece. The turret slide with the conveyer n is now retracted and thecycle again begins anew.

It is self evident that while the turret slide is advanced to fetch a new piece from the magazine the piece previously inserted in the chuck is operated on simultaneously by the first tool in the turret.

The tilting magazine 6 receives its motion from a cam 0 mounted on the distributing arbor Z of the machine. Against the circumference of this cam rest the arms 71 and p of a triple lever p, 2', 1", which is rotatably mounted on the shaft o. As soon as the arm 2' with its roller comes to the lowest portion or the recess of the cam 0 the lever p reaches the corresponding cam piece g, By this the third arm 1- receives a swinging motion carrying along with it the bearing box 8 that turns on the shaft u and acts as carrier for the tilting magazine Z). In this manner the latter may be moved into the position shown in dotted lines and into the operative position by the turning of the cam 0. Simultaneously by this tilting motion of the magazine I) is caused the entrance and withdrawal of the pawl a mounted rotatably on the shaft 6. A second cam m mounted on the same distributing arborZ of the machine that carries the cam 0 serves for the operation of the two pawls c and 70 by shifting the levers h and g which in turn move the shaft 6 and thereby reciprocate the pawls 0 and 7c. The pawl c hereby enters the magazine .7) between the first and second pieces a and forces the latter together with all those beyond it backward. The lever f however pulls the pawl in out of the magazine and releases the foremost piece a. The tilting magazine I), is for this purpose, supported at its lower end by an arm Z fastened to the shaft u whose free end Z extends across under the magazine housing. This cross arm carries the pawl 7: which is a bolt that bears against a spring 2; and the upper end of which is forced toward entering the magazine I) by the spring 3 but is prevented from entering by a double lever to as long as the above mentioned lever f is in its highest position (Figs. 2 and 5). As soon as the magazine I) swings up under the influence of the cam 0 and the pawl c withdraws from the magazine the cam m acts upon and shifts the lever f by means of the levers h and g. The lever f rises and through the lever arm w presses the pawl Z2 back thus permit-ting a new piece a to enter the enlarged chamber d of the tilting magazine. Both pawls c and 7c are thus-independently of the motion of the tilting magazine bdriven separately and can therefore be readily adjusted. While the tilted piece magazine has been shown and described as applied to an automatic turret lathe with axially movable turret the application of same is not limited to such automatic turret lathe but may form an attachment for other machines.

I claim as my invention 1. In a tilting stock feed magazine for automatic turret lathes and the like, a rotatable .cam causing the motion of the tilting magazine which carries the work pieces, two pawls for controlling the forward feeding of said work pieces by allowing only one to pass at a time, and a second rotatable cam causing the motion of said pawls.

2. In a tilting stock feed magazine for automatic turret lathes having an axially movable turret, a rotatable cam causing the motion of the tilting magazine, a triple lever transmitting the motion from said cam to the magazine, two pawls for controlling the forward feeding of said work pieces one at a time, and a second rotatable cam actuating said pawls.

3. In a tilting stock feed magazine, a rotatable cam causing the swinging of the magazine, two feed controlling pawls, a second rotatable cam, and two sets of levers for transmitting the motion from the second cam to the pawls so that said pawls enter into the magazine and pass out of same alternately and successively for forwarding one work piece.

Signed at Leipzig, Germany, this 1st day of December 1910.

JOHANN MARTIN SYROTH. lVitnesses RUDOLPH Fmoxn, ALBERT R. MoRAWETz.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

